Turkish port authorities have begun informally requiring shipping agents to submit letters confirming vessels have no ties to Israel and are not transporting military or hazardous cargo bound for the country, reported Saint Petersburg's PortNews.

The directive, described as verbal, has not been issued through an official circular. Sources indicate the measure is being applied across all Turkish ports.

Guarantee letters must declare that ship owners, operators and managers have no connections to Israel and that the vessel is not carrying explosives, radioactive materials or military equipment intended for Israeli delivery.

Turkey previously suspended US$7 billion in annual trade with Israel over its conflict in Gaza. Despite this, domestic reports have alleged continued commercial exchanges between the two nations.

Following the trade freeze, figures for commerce with Palestine rose sharply, prompting critics to question the scope and enforcement of Turkey's embargo.

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